Fivetran is a tool used by HubSpot's analytics engineering team, led by Oviya Arasu, to automate pipelines and decrease engineering bottlenecks in the company's people data analysis process. Previously, this required manual work with other teams, but with Fivetran, Arasu can access clean, modeled data efficiently and autonomously, controlling all necessary data sources. The tool integrates well with dbt Core, providing pre-built data models, Transformations, and orchestration capabilities that expedite foundational parts of data transformations, freeing up time for more advanced exploration. By leveraging Fivetran's pre-built packages, Arasu can customize models and automate the process, saving significant time on basic tasks and allowing her to focus on custom logic and unique data sources.